function DrawImage(img,wid,hei)    
{    
    var FitWidth = wid,FitHeight = hei;   
    var ImgD = img;   
    var image = new Image();   
    image.src=ImgD.src;   
    if(image.width>0 && image.height>0)    
    {    
        if(image.width/image.height>= FitWidth/FitHeight)    
        {    
            if(image.width>FitWidth)    
            {    
                ImgD.width=FitWidth;    
                ImgD.height=(image.height*FitWidth)/image.width;    
            }    
            else    
            {    
                ImgD.width=image.width;    
                ImgD.height=image.height;    
            }    
        }    
        else    
        {    
            if(image.height>FitHeight)    
            {    
                ImgD.height=FitHeight;    
                ImgD.width=(image.width*FitHeight)/image.height;    
            }    
            else    
            {    
                ImgD.width=image.width;    
                ImgD.height=image.height;    
            }    
        }    
    }    
}    